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Finding the Fourth Proportional to 441.14, 665.56 and 439.93

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Solution

The fourth proportional to 441.14, 665.56 and 439.93 is: 663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.14 : 665.56 = 439.93 : x
  2. Step 2: Convert to fraction form
    441.14/665.56 = 439.93/x
  3. Step 3: Cross multiply
    441.14x = 665.56 × 439.93
  4. Step 4: Simplify right side
    441.14x = 292,796.48
  5. Step 5: Solve for x
    x = 292,796.48/441.14
  6. Step 6: Final answer
    x = 663.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.